What is the awrah of women in front of her mahram(brother, nephew etc)?

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

The most correct opinion in our view regarding the limits of a woman’s ‘Awrah in front of her Mahrams is that she can reveal her face, head, neck, hands and feet; so it is forbidden for her to expose other than these parts in front of her Mahrams.

Allah knows best.